heres what you should do (and what ive been told from my mechanic friend that worked as a mechanic in the BMW service dept. here in cali) A used OEM cat will alway be better than a New aftermarket cat.
My advice would be to look on craigslist for someone that is parting out a 318, 318i, 318is (there are many out there) and buy it used (although in many states is "illegal")
thats what i did. and my check engine light went off all on its own. didn't even have to take it in to get the light reset.
good luck. |